Experimental and analytical studies on bearing capacity of bolt connected composite plate girders

Composite plate girders bearing the enormous concentrated loads from boilers are common members in thermal power plants. Because of their large scale and sustaining distinct loads, the section of these girders is made of two parts combined with high strength bolts. Experimental investigations on two...

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Bibliographic Details
Published in:International journal of steel structures 2017, 17(4), , pp.1317-1329
Main Authors: Zhu, Yiyun, Zhao, Jincheng
Format: Article
Language:English
Subjects:
Bearing capacity
Boiler plate
Civil Engineering
Concentrated loads
Deformation mechanisms
Elastic deformation
Electric power generation
Electric power plants
Engineering
Force distribution
Materials Science
Mechanical efficiency
Plate girders
Solid Mechanics
Stress concentration
Stress distribution
Test procedures
토목공학
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Summary:Composite plate girders bearing the enormous concentrated loads from boilers are common members in thermal power plants. Because of their large scale and sustaining distinct loads, the section of these girders is made of two parts combined with high strength bolts. Experimental investigations on two I-section plate girders, two homogeneous composite girders, and two hybrid composite girders, are implemented. Bearing capacity and member ductility are compared among the three kinds of specimens. To reveal the mechanism of composite plate girders, force method built upon the linear elastic theory is employed, according to deformation coordination among the components. The elastic stress distribution predicted by the analytical method is validated against test data. Based on the internal force distribution derived, the elastic effective width method in current specifications and the plastic effective width method proposed in other published literature are employed herein to predict the critical load. Conclusions can be made that bearing capacity of composite girders is superior to the I-section ones, and hybrid composite plate girders can further balance the economic and mechanical efficiency of constructions. Additionally, several proposals for application are offered.
ISSN:1598-2351
2093-6311
DOI:10.1007/s13296-017-1204-y